I love your stuff
...But I'm not terribly happy with the art style change. I liked the old mastermind better, and It's not just nostalgia either. The more ambiguous, silhouetted Mastermind allowed it to be a parody of all evil masterminds, which made it funnier and more relevant.
Anyway, the jokes were great, but they didn't seem fresh. So I agree with a lot of the other reviewers that this wasn't your best, but I've never in my life seen a movie series in which every episode was perfect. I'm glad you keep making these, I love your work, and I eagerly anticipate part 6.